A 40 amp charger cannot go on a 40 amp breaker... A constant 40 amp draw would blow the breaker.. ANyway, With the Leaf, you cannot charge more than 30 amps anyway... If you ever had a EV that could charge at 40A, then you would need a 50 amp breaker and correct gauge of wire....

EVDRIVER wrote:These are rebranded Chinese units from the many makers that sell them under various names. Few make them but they all "make them".

Chris Howell has tested many Chinese EVSE's and they have all lacked the GFCI coil and test. It is hard to make a glitch free circuit since the levels are so low so they just leave it out.

As I understand it the J1772 specs are optional and leaving out the GFCI test makes a cheaper working unit. OpenEVSE initially did not have the test but for the last few years it has been present and Nick Sayer figured out how to test the circuit so you are confident it is working. The nice thing about the OpenEVSE code is that it is public domain and many have added their tweeks to it. Lincomatic wrote the body, Goldserve added the timer, Killpatrick added temperature shutdown and Nick Sayer added the GFCI test. If you have a good idea Sam (Lincomatic) will add it if there is room (the code space is very full).

I noticed the product does not allow to select voltage. My question is, how smart is it at selecting the best/fastest charge rate?

For example, will it run at 110V 16A if plugged into 20A circuit? WIll it drop down to 12A if connected to 15A circuit? Can it detect circuit amperage? Or is all 110v charging stuck at one voltage like the OEM EVSE?

eyedrop wrote:I noticed the product does not allow to select voltage. My question is, how smart is it at selecting the best/fastest charge rate?

For example, will it run at 110V 16A if plugged into 20A circuit? WIll it drop down to 12A if connected to 15A circuit? Can it detect circuit amperage? Or is all 110v charging stuck at one voltage like the OEM EVSE?

Looks like both are 12a@120v and maximum amps at 240v, that is maximum of your vehicle or EVSE, it has no idea the amperage of your circuit so in the case of the 40a EVSE if your vehicle can draw 40a you better be plugging it into a 50a circuit.Note, I believe OP has flown the coupe but it looks like the price of the 40a model has dropped $80 and is currently $350, which for a 40a EVSE is quite low and the 16a has dropped to $219($40 drop) which IMO is more in line with similar 16a EVSEs. Note every other dual voltage16a EVSEs I've seen run the same current at 120v as 240v, that is 16a which if your vehicle can charge 16a @120v means you'd need a 20a 120v circuit, if you only have a 15a 120v circuit then these EVSEs may be the way to go. Personally, I prefer an adjustable EVSE where I can set my own amperage, both on 120v and 240v, but those tend to cost more than either of these EVSEs.

^^^ while not SPAM per say, that link really has nothing to do with EV charging.....I'd report it, but for some reason the report flag is missing on all the posts in this thread......As noted this this whole thread is basically in an improper area, so I'd personally vote for locking it for good!